M. E. Siqueira, Mayra Isabel Dias, Ana Cláudia Vincenzi Raduan Uski, L. F. Aguiar
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Giant Right Coronary Artery Aneurysm with Arteriovenous Fistula
Coronary artery aneurysm (CAA) is defined as a dilation that exceeds the normal diameter of the adjacent artery or the diameter of the patient’s largest coronary artery by 1.5 times.1 Some authors consider a giant coronary aneurysm when the diameter is > 20 mm, whereas the American Heart Association defines giant aneurysms as those > 8 mm. Giant CAA is a rare pathology with an approximate incidence of 0.02%.2 We report a case of giant right coronary artery aneurysm with fistula to the coronary sinus, appearing as a giant “mass”.